Properly restrict the input dtypes for the array_api trace, svdvals, and vecdot

Original NumPy Commit: f375d71ca101db9541b1e70476999b574634556d

Author: asmeurer

array_api_strict/linalg.py

@@ -344,6 +344,8 @@ def svd(x: Array, /, *, full_matrices: bool = True) -> SVDResult:
 # Note: svdvals is not in NumPy (but it is in SciPy). It is equivalent to
 # np.linalg.svd(compute_uv=False).
 def svdvals(x: Array, /) -> Union[Array, Tuple[Array, ...]]:
+    if x.dtype not in _floating_dtypes:
+        raise TypeError('Only floating-point dtypes are allowed in svdvals')
     return Array._new(np.linalg.svd(x._array, compute_uv=False))
 
 # Note: tensordot is the numpy top-level namespace but not in np.linalg
@@ -364,12 +366,16 @@ def trace(x: Array, /, *, offset: int = 0) -> Array:
 
     See its docstring for more information.
     """
+    if x.dtype not in _numeric_dtypes:
+        raise TypeError('Only numeric dtypes are allowed in trace')
     # Note: trace always operates on the last two axes, whereas np.trace
     # operates on the first two axes by default
     return Array._new(np.asarray(np.trace(x._array, offset=offset, axis1=-2, axis2=-1)))
 
 # Note: vecdot is not in NumPy
 def vecdot(x1: Array, x2: Array, /, *, axis: int = -1) -> Array:
+    if x1.dtype not in _numeric_dtypes or x2.dtype not in _numeric_dtypes:
+        raise TypeError('Only numeric dtypes are allowed in vecdot')
     return tensordot(x1, x2, axes=((axis,), (axis,)))